Distributor for stokers



Aug. 19,'V 1941. y F. sElBEl. Erm.

DI STRIBUTOR FOR STOKERS 2 Sheets-Sheet 1 Filed Dec. 15, 1937 M m l moar E TBU N ma msm EM A d away US- 19, 1941- E. F. sElBEL ETAL 2,253,213

DISTRIBUTOR FOR STOKERS Filed Dec. 15, 1937 2 Sheets-Sheet 2 IINVENTOR'S 36 94 E/.Mm :5E/BEL and ALFRED HufTo/v y' ATTORNEYS Fig. 2;and i Patented Aug. 19, 1941 DISTRIBUTOR FOR STOKERS Elmer F. Seibel maAlfred Hinton, Erie, Pa., as- `signors to The Standard Stoker Company,Incorporated, a corporation of Delaware Application December 15, 1937,Serial No. 179,902

8 Claims.

This invention relates to stokers and more particularly to improvementsin the fuel distributing member of a Stoker of the type thatcommunicates with the rebox through a firing opening in a wall thereofaboveV the level of the rebox grate.

In stokers of this type, the distributing member projects a distanceinto the i'lrebox and is consequently subjected to a high degree ofheat, causing the forward portion thereof to bur-n away andnecessitating frequent replacement of 4 the distributing member. It is,therefore, the main object of this invention to provide the distributingmember of -astoker of the type described with improved means for coolingand prolonging the lifethereof. Y

`Another object of the invention is' to provide anovel combination andarrangement of the means for cooling and prolonging the life of theplate, ,with the plate, so that -it can be conveniently removed andeasily replaced and secured in position.

Other advantages and objects of the invention will becomel apparent fromthe following description, and from the appended claims land drawings,inwhich, i

Fig. 1 is a fragmentary vertical central sectional view of a firebox andStoker-embodying a preferred formwof the invention, the latter beingshown in elevation;

l `Fig.,2 is a plan sectional viewon the line 2-2 of-Fig. 1; l

. Fig. 3 is an end elevation of the distributing member of the Stoker; l

Fig. iis a sectional view on the line 4-4 of Fig. 2;

Figf is a sectional view on the line 5-5 of Fig. 6 is `a sectional viewon the une spe-'t of Fig. 1. Y l l While the novel distributing membermay be used `with various types of furnaces, it is especially adaptedfor use with a locomotive rebox and it has, therefore, been shown soapplied in the drawings. In the drawings, only so much of the stokerhasbeen shown as is essential to va complete understanding `of theinvention.

1 Thetrearlwall or water leg of a locomotive boiler is f ragmentarilyshown` and designated by the numeral I and comprises the inner and outersheets 'II and I2, respectively. A firing opening I3 of the conventionalform used. on stoker fired. locomotives is provided .in the rear walll.i

'I'he stoker, designated generally by the nu- 'and 31.

w1. 11o-105.5) A

meral I4, comprises a riser conduit` I5 which eX- tends-upwardly and iscurved forwardly for delivering' fuel -through the opening I3 onto adistributor plate I6. The conduit I5 is provided with a movable sectionI1 hingedy at its lower portion to the body of the conduit, as at I8,forming-with the redoor I9 a closure for the opening I3.

Suitable means is provided for rigidly attaching the distributor plateI6 to the riser conduit I5. As best shown in Fig. 2, the lower wall 20of the conduit I5 is provided with a recess or cut-away 2l, into whichis fittedthe reduced portion 22 of the distributor plate I6. A pluralityof screws 23 areadapted to hold the parts in assembled relation. Fuelprojecting means, in the form of a steam nozzle 24 having a plurality ofje't apertures 25 therein, is secured in position in a recess 26 betweenthe lower wall 20 of the riser conduit and the rear side of thedistributor plate I6. Suitable means, such as the laterally spaceddiverging ribs 28 and the centrally Adisposed V- shapedblock 29, areprovided on the fuelsupporting surface of the distributor plate I6 fordefleoting fuel to all parts of the rebedin the rebox 30.

Formed with and projecting laterally beyond the sides of the distributorplate I6 and below the levelv of the Vtop surface thereof are the ledges3I and 32. A ledge 33 `also extends forward of the front of the plate I6below the ,level of the top surface thereof. The ledges 3| and 32 areprovided on that portion of the plate I6 that projects into therebox.The ledge 33 is shown along only a portion of the forward end of -the``plate I6, but thelateral extent of this ledge can be increased ordecreased, as desired, according to the weight that it is to support.

i -A skirt 34, suspended from the ledges 3l, 32 and 33, lprotects theportion of the plate I6 that is ordinarily exposed to the fire. V'Iheskirt 34 comprises a front wall 35 depending from the forward edge ofthe distributorplate, a pair of side walls 36 and 31 depending from theside edges of the plate and a rearwardly and downwardly sloping bottomWall 38 joining'with the lower edges of the front and side Walls 35, 36The front Wall 35 and side walls 36 and l3'I are provided along theirupper edges with the inturned flanges 39, 4I] and 4I, respectively,which rest upon the ledges 33, 3l and 32,

respectively, `forming a support for theskirt 34.

The walls 35, 36, 3ll and 38 of the skirt 34 define with the plate I6 achamber 42 open at its rearward end, through which opening a current ofair is drawn from outside the rebox due to the draft in the rebox.

The skirt 34 is arranged, when assembled in the firebox with thedistributor plate I6, to have the rearward edges of its side walls 3Sand 31 and bottom wall 38 closely adjacent the plane of the inside sheetIl of the rebox rear Wall l0. A plurality of perforations 43 areprovided in the front, side and bottom walls of the skirt 34, throughwhich air is drawn from the chamber 42 into the firebox. The draft inthe firebox draws a current of outside air to the firebox through theentrance 44 beneath the distributor plate I6, the air in its passagethrough the chamber 42 and perforations '43 impinging against thedistributor plate I6 effecting a cooling action that protects theportion of the plate ordinarily exposed to the fire from burning away.

In order to secure the skirt 34 in assembled relationwith thedistributor plate I6, pins 45 are provided lpassing through thevertically aligned holes 46 and 41, formed respectively in the plate i6andthe flanges 48, 49, which extend into the chamber 42 from the sidewalls 35, 31, respectivelyjof the skirt 34. Each of the pins 45 isprovided with an enlarged" head 53 which nts into a counterbored recess5I formed in the vplate I6 near its side margin concentric withthe-'vertically aligned holes 46 and 41. The enlarged heads Y The skirt34 thus provides protection for the plate I6 against the intense heat ofthe firebox and is arranged to be easily removed when necessary to makerepairs or replacement thereof without dismantling or disturbing anyother parts of the stoker.

We claim:

1. In combination, a stoker fuel distributing table comprising a tabletop arranged to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides thereofin a plane below the plane of the table top, a detachable shield forsaid table having an inturned ange resting on said ledge-like means forsupporting said shield, ledges formed with said shield Ybelow the levelof said flange extending beneath said table, and meansl extendingloosely through said table and ledges for restraining displacementV ofsaid shield with respect to said table.

2. In combination, a Stoker fuel distributing table comprising a tabletop arranged to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides andfront endv thereof in a plane below the plane of the table top, adetachable shield for said'table having an inturned flange resting onsaid ledge-like means for supporting said shield, ledges formed withsaid shield below the level of said flange extending beneath said table,and means extending loosely through said table and ledges forrestraining displacement ofr said shield with respect to said table.

3. In combination, a Stoker fuel distributing table comprising a tabletop arranged to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides andfront end thereof in a plane below the plane'of the table top, and adetachable"concave shieldfor'said table having an inturned flangeresting on said ledge-like means for supporting said shield, saidconcave shield and said table defining a chamber open at its rearwardend for admission of a cooling uid for protecting that portion of thedistributing table that when in use is exposed to the intense heat of afirebox, ledges formed with said shield extending inwardly of saidchamber beneath each side of the table, and means extending verticallyloosely through said table and said ledges for restraining displacementof said shield with respect to said table, said shield being providedwith a plurality of closely spaced perforations for the emission of thecooling fluid from said chamber.

4. In combination, a Stoker fuel distributing table comprising a tabletop arranged to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides andfront end thereof in a plane below the plane of the table top, adetachable shield having front and side walls embracing correspondingportions of said table and a bottom wall joining said front and sidewalls, said shield having an inturned flange'resting on said ledge-likemeans for supporting said shield, the Walls of said shield and saidtable definingV a chamber open at its rearward end, the side walls of-said shield having ledges formed therewith extending inwardly ef saidchamber beneath said table, and means extending vertically looselythrough said table andV said ledges for restraining displacement of saidshield with respect to Said table.

15.111Y combination, a stoker fuel distributing table comprising a tabletop arrangedV to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides thereofin a plane below the plane of the table top, a detachable concave shieldfor said table having an inturned flange resting on said ledge-likemeans for vsupporting said shield, said concave shield andtablefdefinin'g-'a chamber open at its rearward end, ledges formed withsaid shield and extending inwardly of said chamber beneath each side ofthe table, and

means extending vertically loosely through said table and said ledgesfor restraining displacement of said shield with respect to said table.

6. In combination, a stoker fuel distributing table comprising a tabletop arranged to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides andfront end thereof in a plane below the plane of the table top, adetachable concave shield for said table having an inturned flangeresting on said ledge-like means for supporting said shield, saidconcave shield and table defining a chamber open at its rearward end,ledges formed with said shield and extending inwardly of said chamberbeneath each side of the table, and means extending vertically looselythrough said table and said ledges for restraining displacement of saidshield with respect to said table.

7. In combination, a Stoker fuel distributing table comprising a tabletop arranged to permit fuel to pass thereover for distribution, saidtable having ledge-like means extending outwardly from the sides thereofin a plane below the plane of the table top, a detachable concave shieldfor said table, said shield having an inturned flange at its uppermarginal edge arranged to seat on said ledge-like means for supportingthe shield from said table, said concave shield and table dening achamber open at its rearward end, ledges formed with said shield andextending inwardly of said chamber beneath each side of the table, andmeans extending vertically loosely through said table and said ledgesfor restraining displacement of said shield with respect to said table.

8. As an article of manufacture, a shield for a Stoker fuel distributingtable comprising side Walls, a front wall and a bottom wall, said shieldl0

